image scaler

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image scaler

A circuit that converts the resolution of a video signal to a resolution that is higher or lower. For example, an HDTV set can increase (scale up/upconvert) the standard 480-line resolution from a DVD or TV channel to a 720 or 1080-line resolution by filling in the missing lines via software. Although this may enhance the image, it is not turning it into true high-definition content, which must have a minimum of 720 lines of resolution.

Conversely, the image scaler in an HDTV set that displays only 720 lines of resolution (720p) can reduce (scale down/downconvert) a 1080-line HD signal to fit the screen's native 720 lines. See HDTV and LVDS.


Flat Panel Monitor
This diagram of a typical flat panel monitor shows where the image scaler fits. (Redrawn from original courtesy of Analog Devices, Inc.)
References in periodicals archive ?
British company, Calibre has over 28 years experience providing image scaling and processing technologies for use in broadcast/television, digital cinema, large venue projection, LED videowalls and surgical medical applications.
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